Friction draft-rigging.



S. B. HASELTINE.

FRIGTION DRAFT RIGGING. PPLIULTION' FILED 11111.16, 1911.

Patented A101121, 1914.

w e .m n R4// CL, lfm me c 0 Mm m MH I *um 575:69 5.

er M57 ITED I S Ares PATENT oFFioE.

STACEY B. HASELTINE, OF CHICAGO, ILLINIS, ASSIGNOR T WILLXAM H. MINEB,OF CHICAGO, ILLINGIEL FRICTION IDR/AFI'-IRIIGGING'.l

Specification of Letters Patent.

rat-enten npr, 21, 191e.

Application filed January 16, 1911. Serial No. 603,014..

To all ywhom it may concern t Be it known that l., STACnY B. HASH/rute,a citizen of the United States, residing in Chicago, in the county ofCook and State of Illinois, have invented a new and useful Improvementin Friction Draft-Rigging, of which the following is a specification.

My invention relates to improvements in friction draft rigging forrailway cars.

The object of my invention is to provide an improved construction offriction draft riggingl which will be strong, efficient and durable and`of simple construction, and have a high cushioning capacity, and in.vhich the pressure of the friction shoes against the friction shellwill vbe properly distributed throughout the length of ythe shoes.

My invention consists in the means cinployed to practically. accomplishthis result as herein shown and described, the same comprising inconnection with the draw-- bar, draft yoke, stop men'lbers andfollowers, a pairof twin springs arranged side by side, twin spring`cage or follower, a twin spring bearing` member, a friction shell andfriction shoes within the shell, a wedge and anti-friction rollersinlerl'iosed between the draw-bar and the frition shoes at the front endthereof, and a wedge and anti-friction rollersl interposed between thetwin spring bearing .member and the friction shoes at the rear cudthereof. y

My invention also consists in the novel construction of partsand'devices and in the novel cmnbinations of parts and devices hereinshown and described and more particuhirljyY specified in the claim.

ln. thtl acmanpanying drawing' forming a part of this specification,Figure l is a plan view, partly in horizontal section 0f a frictiondraft. riggingA .embodying my inven tion. Fig. 2 a side elevation,partly in longitiulinal section on line 2 2 of Fig. 1. Fig. il is across section on line 3-3 of Fig. 1. Fig. l is a detail, vertical,longitudinal section of the 'friction shell, twin lspring cage orfollower and contained parte. Fig. is a detail cross section on line 5 5of Fig. 4- and Fig. (3 is a detail. crossI section on line (5-6 of Fig.'-1.

In the drawing, 1 represents the center sills or draft members of arailway car, 2 the end sill, the draw-bar, 4r the draft yoke, 5, 6 front'and rear main stops secured to the draft sills, 7, 8 limiting stops, 9the front follower, 10 a twin spring cage or rear follower, 11 the twinspring seat or bearing member against which thetwin springs 12, 13 bearat their front ends and through lwhich the ressure of the twin Springsl2, 13 an( supplemental twin springs 14, 15 nested within the springs12, 13, is transmitted to the:friction shoes 16 through the interposedsupplemental wedge 17and anti-friction rolle s 18. The pressure Lnedraw-bar 3 afid front. follower 9 is transmitted to the friction slicesthrough the interposed main wedge 19 and anti-friction rollers 20.

2l is' the longitudinally movable friction shell having an internalfriction face engaging the external friction faces of the friction shoes16.- L

The main wedge 19 is connected to -the rear twin spring follower or cage10 by connecting 'bolts 22, 23, 23 through the intei-posed bridffemember 24 which fits in a suitable chanilaer or recess 25 in the twinspringl seat or bearing member' 11, thus holding all the parts assembledwithin the friction. shell 21 and spring cagelO.

yThe friction shoes 1G are preferably three 4 in number, and veach isprovided with two wedge faces 26, 27, one at each end thereof and eachhaving a .shoulder 28 and 29 to hold the anti-friction rollers 18, 20 inplace,

which are .interposed between the friction,

shoes and the corresponding wedge faces 32, 33 of the main andsupplemental wedges19 and 17 respectively. The main and supplementalwedges have corresponding shoulders 34C, for engagement with theantifriction rollers. -find the friction slocs are also provided withshoulders 36, 36. and 37, 37 for engagement with the ends of the rollersto keep the rollers properly in position between the friction shoes andmain and supplemental wedges respectively. The main wedge 19 preferablymoreacute than the supplemental. wedge 17. The relatively bluntsupplemental wedge, in connection with the main wedge serves todistribute the load or spreading' pressure to the friction shoesproperly from end to end thereof while al the saine time the relativelyblunt supplemental wedge does not exert so much spreading pressureagainst the shoes as to prevent the friction cushioning mechanism fromproperly releasing through lie.

the action of the twin springs, 'the stored energy of both compressedsprings coperating to effect the release, and the anti-frietion rollerseo-ucting With the twin springs to effect the release. The twin springrenr follower or spring cage 10 is connected to the friction shell 2l byconnecting bolts 38, preferably located 'at the' corners of the springcage 10 and friction shell and indicated in dotted lines in the drawing.

In my invention the supplemental wedge and anti-friction rollers :1t therear end of the friction shoes also 'have a special eoactive functionvwith the powerful twin springs, in causing the friction Shoes andfriction shell to exert a, spring dempening function in the releasemovement and thus preventing all possibility of violent, sudden i I i ln sirin benrnw member of a, friction shell n i v,

friction shoes within the sliell,n supplemental wedge and anti-frietion.rollers interposed between Seid twin spring bearing inelnber and thetion shoes, and main Weilge und antrfriction rollers interposed betweenlelie drexv-bnr and friction shoes,

substantially as specified,

STACEY B. HASELTINE. Witnesses y PEARL Ann/iris,

EDMUND Aooooli.

